src/glu/sgi/libnurbs/interface/bezierPatchMesh.h

   1 /*
   2  * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
   3  * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice including the dates of first publication and
  13  * either this permission notice or a reference to
  14  * http://oss.sgi.com/projects/FreeB/
  15  * shall be included in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  22  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Except as contained in this notice, the name of Silicon Graphics, Inc.
  26  * shall not be used in advertising or otherwise to promote the sale, use or
  27  * other dealings in this Software without prior written authorization from
  28  * Silicon Graphics, Inc.
  29  */
  30 /*
  31 */
  32
  33 #ifndef _BEZIERPATCHMESH_H
  34 #define _BEZIERPATCHMESH_H
  35
  36 #include <GL/gl.h>
  37 #include "bezierPatch.h"
  38
  39 typedef struct bezierPatchMesh{
  40   bezierPatch *bpatch; /*vertex*/
  41   bezierPatch *bpatch_normal;
  42   bezierPatch *bpatch_texcoord; /*s,t,r,q*/
  43   bezierPatch *bpatch_color; /*RGBA*/
  44
  45   float *UVarray; /*all UV components of all vertices of all strips*/
  46   int   *length_array; /*[i] is the number of vertices in the ith strip*/
  47   GLenum *type_array;  /*[i] is the type of the ith primitive*/
  48
  49   /*to support dynamic insertion*/
  50   int size_UVarray;
  51   int index_UVarray;
  52   int size_length_array;
  53   int index_length_array;
  54
  55   int counter; /*track the current strip size*/
  56   GLenum type; /*track the current type: 0: GL_TRIANGLES, 1: GL_TRIANGLE_STRIP*/
  57
  58   /*we eventually want to evaluate from (u,v) to (x,y,z) and draw them*/
  59   float *vertex_array; /*each vertex contains three components*/
  60   float *normal_array; /*each normal contains three components*/
  61   float *color_array;
  62   float *texcoord_array;
  63
  64   /*in case we need a linked list*/
  65   struct bezierPatchMesh *next;
  66 } bezierPatchMesh;
  67
  68 #ifdef __cplusplus
  69 extern "C" {
  70 #endif
  71
  72
  73
  74 bezierPatchMesh *bezierPatchMeshMake(int maptype, float umin, float umax, int ustride, int uorder, float vmin, float vmax, int vstride, int vorder, float *ctlpoints,  int size_UVarray, int size_length_array);
  75
  76 /*initilize patches to be null*/
  77 bezierPatchMesh *bezierPatchMeshMake2(int size_UVarray, int size_length_array);
  78
  79 void bezierPatchMeshPutPatch(bezierPatchMesh *bpm, int maptype, float umin, float umax, int ustride, int uorder, float vmin, float vmax, int vstride, int vorder, float *ctlpoints);
  80
  81 void bezierPatchMeshDelete(bezierPatchMesh *bpm);
  82
  83 void bezierPatchMeshBeginStrip(bezierPatchMesh *bpm, GLenum type);
  84
  85 void bezierPatchMeshEndStrip(bezierPatchMesh *bpm);
  86
  87 void bezierPatchMeshInsertUV(bezierPatchMesh *bpm, float u, float v);
  88
  89 void bezierPatchMeshPrint(bezierPatchMesh *bpm);
  90
  91 bezierPatchMesh* bezierPatchMeshListInsert(bezierPatchMesh* list, bezierPatchMesh* bpm);
  92
  93 void bezierPatchMeshListPrint(bezierPatchMesh* list);
  94
  95 int bezierPatchMeshListTotalStrips(bezierPatchMesh* list);
  96
  97 int bezierPatchMeshListTotalVert(bezierPatchMesh* list);
  98 int bezierPatchMeshNumTriangles(bezierPatchMesh* bpm);
  99 int bezierPatchMeshListNumTriangles(bezierPatchMesh* list);
 100
 101 void bezierPatchMeshDelDeg(bezierPatchMesh* bpm);
 102
 103
 104 void bezierPatchMeshEval(bezierPatchMesh* bpm);
 105
 106 void bezierPatchMeshDraw(bezierPatchMesh* bpm);
 107
 108 void bezierPatchMeshListDraw(bezierPatchMesh* list);
 109 void bezierPatchMeshListEval(bezierPatchMesh* list);
 110 void bezierPatchMeshListCollect(bezierPatchMesh* list, float **vertex_array, float **normal_array, int **length_array, GLenum **type_array, int *num_strips);
 111
 112 void bezierPatchMeshListDelDeg(bezierPatchMesh* list);
 113 void bezierPatchMeshListDelete(bezierPatchMesh *list);
 114 bezierPatchMesh* bezierPatchMeshListReverse(bezierPatchMesh* list);
 115 void drawStrips(float *vertex_array, float *normal_array, int *length_array, GLenum *type_array, int num_strips);
 116
 117 #ifdef __cplusplus
 118 }
 119 #endif
 120
 121 #endif